My niece is working in a head shop and has kept this job for a few months. We’re thrilled. She also quits or gets fired because she either calls in sick too much or she opens a foul mouth and fights with people.

Maybe look for jobs where acting out is ok. You can accept this is just who you are. So you said a bad word and are immature and silly to amuse yourself.

I hope you find your place to belong.